Getting 240p on 31KHz CRT Monitor with MME4CRT

[Alphanu1]

Hi everyone,

I installed Mubuntu-MME4CRT-desktop-amd64-v1.iso on my Core2Quad PC
and it seems great.

I'm using it with a CRT 19" Trinitron PC Monitor (VGA)
So I launched the "31K install" from the "start menu" and "games", and then rebooted and launched Retroarch.
Once inside if I try loading a rom it works but does not switch to low resolutions.

Myabe I connect the monitor at the wrong timing?
or I need a tool similar to VMM for Linux to generate resolutions first??

Is there a tutorial or something? 

Thank you very much

Double check the settings in RetroArch. 

Enable advanced options then check the crt menu ensure 31khz is selected and your super resolution is choosen.